What is PSI on
       my air brush compressor

This page provides additional information and questions posted by air brush compressor users like yourself. If reading the questions and responses of other air brush compressor users generates a question of your own, there is an air brush compressor forum on this website. You will find that link at the end of this page.

How do I know what the PSI is set to on my compressor? My compressor is for my airbrush and it is really old but still in great shape! There is no dial on it to change the PSI setting.

I'm starting to use it for airbrush makeup and i know it should be no higher than 15 for that. But I have no idea what it is! Its a small compressor so I'm thinking its not much more then that but how do I know for sure?

what is PSI on my air brush compressor - compressed air regulator

My response: You know for sure by installing an air regulator, with an air gauge, in the line from your compressor to your air brush. That regulator can be set for your 15 PSI, and, as long as the upstream air pressure is higher than that, your air brush should see a steady stream of air at the dialed in pressure of 15 PSI, or whatever you choose to set it for.

Read the page on Regulators on this site for much more info about what these useful devices do for you, in particular, for painting applications.

What is the quietest air brush compressors for a apartment? I am looking for the quietest compressor but pretty big or over sized for any job i want to do inside of the apartment and somewhat portable to move around.

My response: Most air brush compressors, those that are built for that industry, are quiet as compared to the lower cost general purpose air compressors on the market. There are a number of manufacturers of "silent" air compressors too.

Your "Pretty big" doesn't provide a clue as to size. Aside from an airbrush, are you planning to use compressed air for anything else, and if so, what are the air demands of the tools you expect to use?

If you use your browser search and enter "silent compressors" you will find a large selection. Before you can make a choice, you have to know what your air demand is so you can size the new compressor correctly.

What is best. Bleed or none bleed type of air brush compressors?

My response: Compressors have bleed (unloader) valves to remove pressure over the piston to facilitate easier motor start when the low pressure set point turns the compressor back on. Turbine compressors have a bleed function to eliminate back pressure and pressure fluctuation, similar in concept to the unloader valve of piston compressors.

The Air Brush industry seems to use the term bleeder valve to refer to the ability of the air pressure regulator to bleed off any downstream pressure back through the regulator should that downstream pressure ever exceed the regulator set point. Most general purpose regulators are set up to bleed to atmosphere anytime there's back pressure to the regulator from the end tooling.

You can purchase compressed air regulators that don't bleed. These are commonly used when the compressed gas being used is expensive (you don't want it voiding to atmosphere ever) or when the compressed gas if flammable or toxic. You don't want them bleeding to atmosphere through any orifice for obvious reasons.

Since your question is a bit general, I'm not quite sure if I've targeted the question correctly, or provided the right answer.

Visitor comment: "I think what they are talking about is the on off switch. Internal would be fully automatic and self is you turn on the unit to use it and turn off when you are done. But don't walk away and leave as the compressor might not shut off."

Can you use a airbrush for cake decorating and for paint or do you need 2 seperate airbrushes? And, I want to airbrush designs on cakes. I got an airbrush kit as a gift but I do not have a compressor - what do I get?

picture of cake

My response: Thanks for the questions. Some time ago my wife and I were watching a cooking show (my excuse was there were no building shows or sports on at the time) and it was a cake building and decorating competition. I was very surprised to see the baker / artists using an air brush to "paint" the cakes. I was also interested in knowing what steps they were using to make sure that the process did not contaminate the cakes with the undesirable by products typically found in the flow of compressed air from a compressor.

If you want to use an air brush to decorate cakes, then you need to be aware of certain things. Since, I am not a baker, I don't know anything about the "paint" that the bakers were using to airbrush their cakes. I would expect that it was something that was food grade and edible. What you use sure should be.

What concerned me most was the source of the compressed air for the airbrush gun? The compressed air that discharges from a typical compressor is full of "stuff" that you would not want to eat. Using that air to spray paint a cake would deposit that "stuff" on the cake. Yuck! You need to make sure that the compressed air blowing onto the cake is pristine. Regardless of the type of compressor you have, you will need to treat the compressed air to make it suitable and safe for food applications. Please read the pages on compressed air treatment on this web site to get a better sense of what's coming out of the typical compressor and what equipment you need to use to get rid of it.

The air compressor you get has to be one that will provide enough compressed air at the pressure your air brush needs to do the job. The air brush itself does not care where it gets the compressed air from, just that there is enough of air at the right pressure to work. See the air brush specs for those numbers. Use any compressor you want to air brush food. Just make darned sure that the compressed air is treated (oil, particulates and water removed) before that compressed air touches the food.

Quickfit airbrush connectors /fittings - are they worth it?? I'me about to get involved in airbrushing - bought a cheap double action off ebay, and now reading about compressors. Plan to go more $$ on a brush when I understand a little more about what I'd actually be looking for.

My response: Hi Luke, are they worth it? Depends on your budget. I believe Quickfit is a brand from Iwata, which means that their couplers and connectors will work together, but possibly not with other brands of couplers and connector. That being the case, if you start with them, then you'll want to stay with them so that all of your various air implements interconnect.

By the same token, you can standardize on any brand of coupler / connector too. Do you have any air fittings now? If not, how does Quickfit stack up price-wise against other brands? How much time do you want to spend chasing down alternatives if all you are really going to do is connect up one air brush to an air line?

It's your call. If you are not sure about how they all work together check out the fittings section on this website for complete information.

Got a question about air brush compressors? The air brush compressor forum is here on this site.